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Forwards safety evaluation re local leak rate testing of containment isolation valves in reverse direction.Requests corrective action plan for 16 valves found to be not as conservative as tests in accident direction.

Accession Number: ML20070B722

Date Released: Saturday, November 7, 2020

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• ML20070B720 - Forwards safety evaluation re local leak rate testing of containment isolation valves in reverse direction.Requests corrective action plan for 16 valves found to be not as conservative as tests in accident direction. (4 page(s), 1/28/1991)
• ML20070B723 - Safety evaluation re local leak rate testing of containment isolation valves in reverse direction. (7 page(s), 1/28/1991)